The following report contains three main sections consisting in:

  1. Technical details. Here we discuss issues regarding the electrical recordings per se.
  2. Spike detection and clustering. Here you can find the number of spikes detected per tetrode, the sorting into clusters of SUA (presumably) and a raster plot.
  3. Statistical assesment. This section contains histograms of spike counts (peristimulus, perilever) and correlation analysis similar to the one in Kelemen and Fenton 2013.

Technical details

In the following graphs you can see the raw recording and the filtered recording for every tetrode and channel:

 

 

Spike detection and clustering

Overall we’ve detected 21 clusters that could be interpreted as single neurons or at least groups of synchronized neurons. The number of single units and spikes per unit detected in every tetrode is as follows:

[1] "Tetrode 1 , 2 SU: 9720 11044"
[1] "Tetrode 2 , 2 SU: 4880 11995"
[1] "Tetrode 3 , 2 SU: 9729 10156"
[1] "Tetrode 4 , 4 SU: 12587 2386 7634 10077"
[1] "Tetrode 5 , 2 SU: 9294 8913"
[1] "Tetrode 6 , 2 SU: 10883 15580"
[1] "Tetrode 7 , 5 SU: 2453 3934 3190 3019 3207"
[1] "Tetrode 8 , 2 SU: 15853 10185"

Clustering graphs (interactive, you can rotate them):

You must enable Javascript to view this page properly.

 

 

Raster plot

Each row is a neuron (21 rows), the blue vertical lines separates condition 1, 2 and 3:

 

 

Correlograms

Tetrode 1

Tetrode 2

Tetrode 3

Tetrode 4

Tetrode 5

Tetrode 6

Tetrode 7

Tetrode 8

 

 

Correlation matrix

  • The green lines represent the boundaries between condition 1, condition 2 and condition 3.
  • Bottom row corresponds to correlations for condition 1: left corner against itself, center against condition 2 and right corner against condition 3.
  • Center row corresponds to correlations for condition 2: left corner against condition 1, center against itself and right corner against condition 3.
  • Top row corresponds to correlations for condition 3: left corner against condition 1, center against condition 2 and right corner against itself.

As the matrix is symmetric around the main diagonal, we usually interpret only the upper or lower triangle contained over or behind that line.